Can you find out the missing number in the grid?

Why do you find that most of the buildings are deprived of the 13th floor?

What Time Should the last watch show in the below figure?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

I taste better than I can smell. Who am I?

Can you count the number of lines in the below picture?

What is the end of everything?

Can you write down eight eights so that they add up to one thousand?

I ask Joseph to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Jack can't see any of this). I look at the cards and I pick 1 card out and give it back to Joseph. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Jack.

Jack looks at the 4 cards i gave him, and says out loud which card Joseph is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Jack needs to know is the order of the cards and what is on their face, nothing more.